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  <a name="EN-US_TOPIC_0000001897309002"></a><a name="EN-US_TOPIC_0000001897309002"></a>
  <h1 class="topictitle1">Configuring the DNS Service</h1>
  <div>
   <p>After connecting the <span>product</span> to the DNS server, external domain names can be resolved and accessed.</p>
   <div class="section">
    <h4 class="sectiontitle">Prerequisites</h4>
    <ul>
     <li>The DNS server has been configured and is running properly.</li>
     <li>TCP/UDP port 53 between the <span>product</span> and DNS server is enabled.</li>
    </ul>
   </div>
   <div class="section">
    <h4 class="sectiontitle">Context</h4>
    <ul>
     <li>A DNS server is used to resolve and access external domain names.</li>
     <li>If you want to configure a standby DNS server, keep the domain names of the active and standby servers consistent.</li>
    </ul>
   </div>
   <div class="section">
    <h4 class="sectiontitle">Procedure</h4>
    <ol>
     <li><span>Choose <strong>Settings</strong> &gt; <strong>Basic Information</strong> &gt; <strong>DNS Service</strong>.</span></li>
     <li><span>Click <strong>Modify</strong> in the upper right corner of the <strong>Management DNS</strong> area to configure the DNS service for the management plane.</span></li>
     <li><span>Set <strong>Active DNS IP Address</strong>.</span><p></p>
      <ol type="a">
       <li>(Optional) Set <strong>Standby DNS IP Address 1</strong>.</li>
       <li>(Optional) Set <strong>Standby DNS IP Address 2</strong>. Set <strong>Standby DNS IP Address 1</strong> first and then <strong>Standby DNS IP Address 2</strong>.</li>
       <li>(Optional) Test the connectivity between the DNS server and the storage system.
        <ul>
         <li>You can click <strong>Test</strong> next to a DNS IP address to test its availability.</li>
         <li>You can click <strong>Test All</strong> to test the connectivity between the DNS server and storage system.</li>
        </ul></li>
       <li>Click <strong>Save</strong>.</li>
      </ol> <p></p></li>
    </ol>
   </div>
  </div>
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